Gold has played a central role in human civilization for thousands of years, and Egypt’s Eastern Desert stands as one of the earliest and most enduring centers of gold mining. Despite this long history, stretching from Pharaonic times to modern industrial operations—the region remains incompletely explored using contemporary geological and geophysical approaches. The newly published chapter Orogenic Gold Deposits in Egypt addresses this gap by presenting an integrated and up-to-date scientific framework for understanding gold mineralization in the Eastern Desert.
The study demonstrates that Egypt’s orogenic gold deposits are genetically linked to the Neoproterozoic Pan-African Orogeny, during which the Arabian-Nubian Shield was assembled through subduction, terrane accretion, collision, and post-collisional extension. Major regional structures—most notably the Najd Fault System—acted as first-order controls, channeling gold-bearing hydrothermal fluids through brittle–ductile shear zones. Gold deposition typically occurred at depths of approximately 3–15 km, allowing deposits to be classified into epizonal, mesozonal, and hypozonal types.
Beyond structural geology, the chapter provides a detailed discussion of alteration styles (silicification, sulfidation, sericitization, carbonatization), ore mineralogy, fluid geochemistry, and pressure–temperature (P–T) conditions. The results emphasize the dominant role of low-salinity, CO₂-rich metamorphic fluids released during regional metamorphism, with pressure fluctuations along active faults serving as a key trigger for gold precipitation.
One of the most innovative aspects of the work is the identification of an atypical orogenic gold deposit type that displays transitional features between epithermal, mesozonal orogenic, and porphyry systems. This hybrid mineralization style challenges traditional classification schemes and positions the Eastern Desert as a natural laboratory for testing new genetic models of gold formation.
The study also underscores the importance of advanced exploration tools, including remote sensing, GIS-based structural analysis, and isotopic techniques, for unlocking the region’s remaining gold potential. These approaches are particularly relevant for optimizing exploration strategies around major deposits such as Sukari, while ensuring environmentally responsible and sustainable mining practices.
By combining regional tectonics, mineral systems analysis, and modern exploration concepts, this contribution exemplifies the strong link between fundamental earth-science research and applied mining geology. It also reflects the international scientific impact and research excellence associated with the Faculty of Mines, Istanbul Technical University, reinforcing its role in advancing global understanding of mineral resources.
Figure: Conceptual illustration showing how gold forms at different depths within the Earth’s crust. Gold-bearing fluids rise along major fault and shear zones, depositing gold from shallow levels near the surface to deeper crustal environments, depending on pressure, temperature, and structural conditions (Abdelnasser, 2025).
Related Publication:
Abdelnasser, A. (2025). Orogenic Gold Deposits in Egypt. In: Hamimi, Z., et al. Gold Deposits in Egypt. Sustainable Landscape Planning and Natural Resources Management. Springer, Cham. https://doi.org/10.1007/978-3-031-75972-7_8